Enable C++11 support.

This CL catches the sailing C++11 train by enabling C++11 support in the
gyp file and migrating code to use range-based for loops and braced
initializer lists.

TEST=Tested the following:
1. `USE='gdmwimax wimax' FEATURES=test emerge-$BOARD platform2`
2. Run platform_WiMaxPresent and platform_WiMaxSmoke test.

Change-Id: I7613bd7ae7b74120caa8d4c321e5600371cb0a5b
Reviewed-on: https://chromium-review.googlesource.com/196388
Reviewed-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
5 files changed